Glass-cutting machine.



c. F. LINDEBURG.

I GLASS CUTTING. MACHINE.

APPLICATION FILED NOV. 10, 1915.

1,204,039. Patented Nov. 7, 1916.

WITNESS I IAIVEIITOR.

55W WWW Ana/Mr.

mr .wmR/s puns co PNOTO-LIYND WASNINGRJN u c i A l i EQE.

' CHARLES F. LINDEBURG, F NEWARK, NEW JERSEY.

GLASS-CUTTING MACHINE.

Specification of Letters Patent.

Patented Nov. 7, 1916.

Application filed November 10, 1915. Serial No. 60,637.

To all whom it may concern Be it known that I, CHARLES F. LINDE- nnno, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Glass- Cutting Machines, of which the following is a specification. 1

This invention relates to that class of glass cutting machines for cutting disks of glass, and the objects of the invention are to provide a machine in which an even pressure may be applied in scoring the glass; to thus obtain a clean and accurate cut; to provide a construction in which the tool is rotated by power; to rotate the tool only while it is lowered toward the glass; to permit the cutter to be readily removed and replaced; to cause the cutter to remain tangential to the scored circle at whatever'point it rests; to secure simplicity of constructlon and operation, and to obtain other advan tages and results as may be brought out in the following description. 7 Referring to the accompanying drawings, in which like numerals of reference indicate the same parts throughout the several views, Figure 1 is a side elevation of a glass cutting machine embodying my invention; Fig. 2 is an end view of the, same looking at the right hand end of Fig. 1; Fig. 3 is a longitudinal vertical section on line AA Fig. 2, and'Fig. 4 is a perspective View of the tool, partially broken away to I disclose the mounting of the cutter.

In the specific embodiment of the invention illustrated in, said drawings, the reference numeral 1 indicates a supporting frame providing a foot 2 by which the frame may be secured to a suitable bench and formed integrally therewith is an upright-3 with which is integrally formed a pair of lateral arms 4, 5 extending preferably in the opposite direction from the foot and adapted, when the foot is held fast, to extend substantially parallel above the bench. These arms are spaced apart and substantially parallel to each other, one, as 4, being at the upper end of the upright 3 and the other part way down the upright. At their ends away from the upright, the arms are connected by a brace 6 preferably parallel to the upright.

Alined bearings 7, 8 are provided in the arms 4, 5 adjacent the ends thereof toward the brace 6, and in the same is mounted r0- tatably and Slidably a spindle 9 which is held thereby substantially parallel to the upright 3 and prependicular to the supporting surface or bench. The upper end .of this spindle is preferably semi-spherical and seated upon the same is a knob or handle 10 prevented from displacement by any suitable means, such as by providing a slot 11 circumferentially of the spindle and passing a pin 12 through the knob to engage within said slot. By this means, the knob is longitudinally stationary upon the spindle but may be freely rotated thereon. Between the knob 10 and the bearing 7 is a spiral spring 13 under compression so as to normally force the knob and spindle upward.

Rotatably carried upon the spindle be tween the arms 4, 5 is a loose pulley 14, preferably held normally upward upon the spindle by a spring 15 between itself and the lower arm 5. A stop 16 integral with the brace 6 and projecting inwardly over the pulley 14 limits upward movement of the pulley. Clutch means are provided for driving the spindle 9 from the pulley 14 adapted to automatically engage as the spindle is lowered, and such means I have shown as providing a clutch member .17 integral with respect to the pulley 141 and having upwardly extending ears 18. Abowe the pulley and secured upon the spindle as by a transverse pin 19 is a co-acting clutch member 20 having shoulders 21 adapted to engage the cars 18. This co-acting clutch member is positioned upon the spindle so as to be released from the other member 17 when the spindle is drawn upward to its normal position, and preferably the member 20 forms a stop adapted to engage the under side of the upper arm for limiting the upward movement of the spindle. When the 'upper clutch member 20 is raised and in engagement with the upper arm 4 the spring 15 raises the pulley 1 1 into engagement with the stop 16, and the stop 16 is so placed that the clutch members are at such time held out of engagement with each other. Accordingly the pulley may be rotated freely and will not rotate the spindle. However, as the operator presses downward on the knob 10 the clutch member 20 will come into engagement with the clutch member 18 on the pulley and-start rotation of the spindle, after which further depression of the knob 10 will lower'the pulley away from the stop 1.6 but will still retain the clutch members in operative engagement so that the spindle rotates. On the upright 3 and transverse thereto adjacent its upper end is a bearing 22 in which is mounted an axle 23 projecting at the opposite sides of the frame and having idler pulley wheels 2 2% mounted upon said projecting ends. A belt 25 passes under one of these pulleys Ql, then to the pulley 14- around the same, and back to the other pulley 24- passing under the same and tured as at 27 to receive a tool 28. This tool comprises a squared shank portion 29 adapted to be inserted n the aperture 27, and one end of the shank as 30 is bent at substantially right'angles so as to depend from the'horizontal portion of the shank.

This depending portion 30 is provided with a long socket 31 opening downward and adapted to rotatably receive the upper end of a cutter It will be understood that the socket 31 and the end of the cutterinsertedtherein are both cylindrical, conica at their upper ends and of substantially the same diameter so that the cutter will turn freely therein. A downwardly facing shoulder 33 is provided circumferentially of the cutter at a distance from its upper end substantially equal to the depth of the holerso that the shoulder is at the lower end of the depending portion 30 when the cutter is in-, serted in position therein. A suitable latch is adapted to engage under the shoulder for holding the cutter in place and for illustrative purposes this latch is shown a leaf spring extending longitudinally of the depending portion 30 of the tool and tending to normally lie flatwise there-against.

.Said leaf spring is secured'at its upper end to the depending portion of the tool as'hy a screw 35 and atits lower end is provided with a transverse portion 36 adapted to eX- tend under the lower-end of the depending portion of the tool and notched as at 37 inwardly from its free end to take around the cutter below the shoulder 33. It will be understood that the notch is small enough so that the upper end of the cutter cannot pass through the same and thus when the leaf spring isclying flatwise against the depending portion of thetool the cutter will berotatably held in position, but to remove the same it is only necessary to draw the leaf spring outward to disengage theshoulder at which time the cutter may be slipped V out. At the lowerend of the cutter is pro vided a scoring wheel 38 whichwill engage and score the glass as the spindle is lowered and rotated. In order that the scoring wheel may stand in tangential relation to the scored circle at whatever point itrests' the ma be proved parting fromgthe-spirit and scope: of the lower end of the 'cutteris curved in a plane transverse to the pivoting of the scoring wheel, so that the lowest point of the scoring wheel resting nponcthe glass iyill not be on the center line of the straight portion of 7 the cutter. 'Consequently, as .the tool is swung around, the scoring wheel will lag and thus hold its proper relation to the circle being scored. For varying the diameter of the circle thus scorech the horizontal 7 shank portion of the tool may be adjusted within the aperture 27, and a screw 39 is arranged in the spindle to clamp the tool at such adjust-ed position, the present disclosure showing the screw insertedtransversely 3 of the spindle; The lower end of the spindle belowthe tool is split in the plane of the tool and spindle and the ends thus obtained may be drawn. together by the screw 39 to clamp the tool.- s c 7 To rotate the tool in operation of the j machine the operator presses down 'upon' the knob 10, overcoming 'firstthepressure of the spring 3 and then the pressure of both that spring and the spring 15 as the 9 clutch members are engaged and the pulley wheel is lowered away from its stop '16, until the scoring wheel thus caused to revolve engages the work'and cuts the same. Obvi-. onsly'no attention has to be paid to rotating thetool, asthat occurs automatically,and

the operator may retain an even pressure:

upon the knob so as to obtain an even scormg and consequentlya clean'cut. When the operator releases the knob IOthe' spring c 13 raises the spindle until'the clutch mem-' .7

her :20 engages the upper arme ofthe frame and the spring 15 raises the pulley 1.4 until it engages the stop 16, "and". the spindle and tool remain at rest" until lowered ,ontO'an-J F" other piece of glass; 7 V V c 7 Obviously deta lmodlfica tion and changes ma de in the manufacture of my 'imglass cutting 'machine without deinvention, and I do not wish to be under-=1 stood'as restricting:myself except as re-'. 7 V

strned in the light of the prior art.-

Having thus what I claim is: V V V 1. In a device of'the character described,

the combination witha frame, o-fa. spindle quired by. the following claims when conrotatably and slidably mounted in said frame, a cutting tool in said spindleyclutch' members one fast on the spindle' and the other loose,;means for driving lsald loose clutch member. and means normally hold ingthe spindle slid away from the work and the clutch thrown out, sa d parts be ng arranged 'a nd a dapted r so that pressure upon throwsin the clutch before said to'ollcen described the invention, 7115' V the spindleto engage the tool withithe wort V V 2. In a device of the character described, the combination with a frame, of a spindle rotatably and slidably mounted in said frame, a tool in said spindle, a clutch member rotatably mounted upon the spindle, means for rotating said clutch member, and a co-acting clutch member fast upon the spindle and adapted to engage or be released from the first-mentioned clutch member as the spindle is slid in one direction or the other.

3. In a device of the character described, the combinationwvith a frame, of a spindle rotatably and slidably mounted in said frame, a tool in said spindle, a clutch member rotatably mounted upon the spindle, means for rotating said clutch member, a coacting clutch member fast upon the spindle and adapted to engage or be released from the first-mentioned clutch member as the spindle is slid in one direction or the other, and means for retaining the clutch members separated when the spindle is slid in one direction.

4. In a device of the character described, the combination with a frame, of a spindle rotatably and slidably mounted in said frame, a tool in said spindle, a clutch member rotatably mounted upon the spindle, means for rotating said clutch member, a coacting clutch member fast upon the spindle and adapted to engage or be released from the first-mentioned clutch member as the spindle is slid in one direction or the other, and means for sliding said spindle in the direction for normally releasing the clutch members.

5. In a device of the character described, the combination with a frame, of a spindle rotatably and slidably mounted in said frame, a tool in said spindle, a clutch member rotatably mounted upon the spindle, means for rotating said clutch member, a coacting clutch member fast upon the spindle and adapted to engage or be released from the first-mentioned clutch member as the spindle is slid in one direction or the other, means for sliding said spindle in the direction for normally releasing the clutch members, and means for separating the clutch members as the spindle is slid by said sliding means.

6. In a device of the character described, the combination with a frame, of a spindle rotatably and slidably mounted in said frame, a tool in said spindle, a loose pulley rotatably mounted on said spindle and providing a clutch member, a co-acting clutch member fast upon the spindle and adapted to engage or be released from the clutch member on the pulley as the spindle is slid in one direction or the other, a spring for sliding the spindle in a direction to disengage the clutch members, a spring for sliding the pulley wheel in the same direction, and a stop for limiting the movement of the pulley wheel whereby the spindle may be slid farther than the pulley to dis engage the clutch members.

7. In a device of the character described, the combination with a frame, of a spindle rotatably and slidably mounted in said frame, a cutting tool in said spindle, clutch members one fast on the spindle and the other loose, means for driving said loose clutch member, means normally holding the spindle and loose clutch member slid away from the work, and a stop for limiting such sliding of the loose clutch member so that the fast clutch member will be carried out of engagement with it.

8. In a device of the character described, the combination with a frame providing a pair of parallel horizontal arms spaced apart and providing vertically alined bearings, of a spindle rotatably and slidably mounted in said bearings, a tool in said spindle, a pulley wheel rotatably mounted on the spindle between the arms of the frame and providing a clutch member at its top, a co-acting clutch member fast upon the spindle between the pulley wheel and the upper arm of the frame, a spring for holding the pulley wheel normally upward upon the spindle, a stop for limiting upward movement of said pulley wheel, and means for sliding the spindle upward to disengage the clutch members.

9. In a device of the character described, the combination with a frame providing a pair of parallel horizontal arms spaced apart and providing vertically alined bearings, of a spindle rotatably and slidably mounted in said bearings, a tool in said spindle, a pulley wheel rotatably mounted on the spindle between the arms of the frame and providing a clutch member at its top, a co-acting clutch member fast upon the spindle between the pulley wheel and the upper arm of the frame, a spring for holding said pulley wheel normally upward upon the spindle, a stop for limiting upward movement of said pulley wheel, means for sliding the spindle upward to disengage the clutch members, said co-acting clutch member adapted to engage the upper arm of the frame and limit upward movement of the spindle.

10. In a device of the character described, the combination with a frame and a spindle rotatably and slidably mounted in said frame, of a tool having a shank portion adjustably mounted transversely of said spindle at its lower end and having a dependingportion, a cutter mounted in said depending portion having its lower end curved out of alinement with the upper end and having a scoring wheel rotatably mounted in the same plane in which the cutter is curved.

11. In a device of the character despindle at its lower end and having a depending portion, a cutter mounted in said depending portion having its lower end curved out of alinement With the upper end and having a scoring Wheel rotatably mounted in the same plane in which the cutter is curved, and means releasably securing the cutter in position.

12. In a device of the character described, the combination with a frame and a spindle rotatably and slidably mounted in said frame, of a tool having a shank portion adjustably mounted. transversely of said spindle at its lower end and having a depending portion, a cutter mounted in said depending portion having its lower end curved out of alinement With the upper end.

and having a scorin Wheel rotatably mounted in the same plane in which the cutter is curved, a leaf spring at the side of said depending portion of the shank of the tool having a transverse portion adapted to exi CHARLES F. LINDEBURG;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

